National Beer Day is celebrated annually on April 7th in the United States. This day marks the anniversary of the Cullen-Harrison Act, which was enacted in 1933, allowing the sale of beer with an alcohol content of up to 3.2%. This legislation was a significant step towards the end of Prohibition, which had banned the production and sale of alcoholic beverages since 1920. On National Beer Day, beer enthusiasts often gather to enjoy their favorite brews and explore local breweries. Many establishments offer special promotions and events to commemorate the occasion, making it a popular day for socializing and celebrating the rich history of beer in American culture.